Add option to build Stubby from subproject, and remove Stubby-only items from getdns config.

This requires the latest version of the Stubby CMake build to work.

CMakeLists.txt

@@ -49,20 +49,6 @@ include(CTest)
 include(GNUInstallDirs)
 include(TestBigEndian)
 
-# Directories
-if (DEFINED CMAKE_INSTALL_FULL_RUNSTATEDIR)
-  set(RUNSTATEDIR "${CMAKE_INSTALL_FULL_RUNSTATEDIR}")
-else ()
-  set(RUNSTATEDIR "${CMAKE_INSTALL_FULL_LOCALSTATEDIR}/run")
-endif ()
-install(DIRECTORY
-  DESTINATION ${RUNSTATEDIR}
-  DIRECTORY_PERMISSIONS
-  OWNER_READ OWNER_WRITE OWNER_EXECUTE
-  GROUP_READ GROUP_EXECUTE
-  WORLD_READ WORLD_EXECUTE
-  )
-
 # Target Platform
 if (WIN32 OR MINGW OR MSYS OR CYGWIN)
   set(HOSTOS "windows")
@@ -117,6 +103,8 @@ option(ENABLE_NATIVE_STUB_DNSSEC "Enable/disable native stub DNSSEC support." ON
 option(ENABLE_STUB_ONLY "Restricts resolution modes to STUB." ON)
 option(ENABLE_UNBOUND_EVENT_API "Enable usage of libunbound's event API." ON)
 
+option(BUILD_STUBBY "Compile and install stubby, the (stub) resolver daemon." OFF)
+
 # Above names chosen for user consistency. Now define substituted names.
 set(REQ_DEBUG ${ENABLE_DEBUG_REQ})
 set(SCHED_DEBUG ${ENABLE_DEBUG_SCHED})
@@ -174,17 +162,6 @@ set(MAXIMUM_UPSTREAM_OPTION_SPACE 3000)
 # Values derived from options.
 set(GETDNS_COMPILATION_COMMENT "${PACKAGE_NAME} ${GETDNS_VERSION} configured on ${CURRENT_DATE} for the ${API_VERSION} version of the API")
 
-# Does the compiler accept the "format" attribute?
-try_compile(HAVE_ATTR_FORMAT
-  ${CMAKE_CURRENT_BINARY_DIR}
-  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/tests/test_format_attr.c
-  )
-# Does the compiler accept the "unused" attribute?
-try_compile(HAVE_ATTR_UNUSED
-  ${CMAKE_CURRENT_BINARY_DIR}
-  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/tests/test_unused_attr.c
-  )
-
 # Compiler flags
 if (MSVC)
   # The Visual Studio C compiler is C90 with some of C99 and C11.
@@ -760,3 +737,7 @@ install(CODE "message(\"\
 ***  on the default location when there is no active external\n\
 ***  trust anchor management keeping it up-to-date.\n\
 ***\")")
+
+if (BUILD_STUBBY)
+  add_subdirectory(stubby)
+endif ()

cmake/tests/test_format_attr.c

@@ -1,13 +0,0 @@
-#include <stdio.h>
-
-void f(char *format, ...) __attribute__ ((format (printf, 1, 2)));
-
-void f(char *format, ...)
-{
-}
-
-int main (int ac, char *av[])
-{
-    f("%s", "str");
-    return 0;
-}

cmake/tests/test_unused_attr.c

@@ -1,13 +0,0 @@
-#include <stdio.h>
-
-void f (char *u __attribute__((unused)));
-
-void f(char *u)
-{
-}
-
-int main (int ac, char *av[])
-{
-    f("str");
-    return 0;
-}

stubby

@@ -1 +1 @@
-Subproject commit b0d3154af61e1b46a30b56d239dc074273642217
+Subproject commit 42a37b0125b5a4d0985c86608a62d76e804c10ca